The slowing down was necessary to not overload the batteries (very obviously necessary since phones were resetting otherwise), and apple offered replacement batteries almost at cost. What more do you want??
I'll take a slightly slower phone (in reality not noticeable on most tasks) over unplanned restarts. My partner only just stopped using the iPhone 6 I bought in 2014, original battery all the way, and she had the throttling turned on for years without knowing or caring.
> apple offered replacement batteries almost at cost.
Only after they were caught slowing down phones without informing users.
That's a deliberately uncharitable interpretation. It could just as easily be explained by them wanting the customers to not have a crashing phone tarnishing their opinion of the brand. If it were about money, they should have popped up a message saying "The phone is going to be slower because the battery is dead, contact your Apple Store to buy a new battery."
I told you, I want the ability to replace the battery myself. Do you like losing your phone for a few hours/days so you can get the battery replaced?